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anonymous

  • one year ago

evaluate this integral!! how do i do this? thank you!!

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  1. anonymous
    • one year ago
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    |dw:1442204105077:dw|

  2. CandyCove
    • one year ago
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    I don't know the answer but I like your username!

  3. Zale101
    • one year ago
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    Are you familiar with IBP?

  4. anonymous
    • one year ago
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    what does that stand for?

  5. Zale101
    • one year ago
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    Integration by parts

  6. anonymous
    • one year ago
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    a bit! just went over it earlier for a problem, but it was a long and confusing problem lol

  7. anonymous
    • one year ago
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    so i find u, dv, dv, and v? would i have these so far? u=-sin x dv = dx du = dx / (1-x) v = x ?

  8. Zale101
    • one year ago
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    |dw:1442204387503:dw|

  9. Zale101
    • one year ago
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    Correct @iheartfood

  10. anonymous
    • one year ago
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    okay!! and so i do this? |dw:1442204498064:dw|

  11. Zale101
    • one year ago
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    |dw:1442204578798:dw|

  12. Zale101
    • one year ago
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    |dw:1442204650518:dw|

  13. anonymous
    • one year ago
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    okay!! and so what happens? i plug in and then get this? |dw:1442204676538:dw|

  14. Zale101
    • one year ago
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    |dw:1442204717388:dw|

  15. Zale101
    • one year ago
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    I see that you have sine instead of arcsine |dw:1442204781493:dw|

  16. anonymous
    • one year ago
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    oh oops my bad haha i meant to write sin^-1x lol

  17. Zale101
    • one year ago
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    Oh okay, but how did you get negative in front of sine?

  18. anonymous
    • one year ago
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    ohh oops so it should be like this? |dw:1442204892821:dw|

  19. anonymous
    • one year ago
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    the stuff you're writing keeps disappearing?

  20. Zale101
    • one year ago
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    Correct.

  21. Zale101
    • one year ago
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    |dw:1442205244552:dw|

  22. anonymous
    • one year ago
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    haha okay so would i then simplify and get this? xarcsinx + (1/2)((u^-1/2 +1)/(-1/2 + 1)) --> xarcsinx + u^1/2 + c ?

  23. anonymous
    • one year ago
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    would that be the correct solution?

  24. Zale101
    • one year ago
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    Yes. What would be u tho?

  25. Zale101
    • one year ago
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    u=1-x^2

  26. anonymous
    • one year ago
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    yes:)

  27. anonymous
    • one year ago
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    and so i plug in? xsin^-1 x + (1-x^2)^1/2 + c is the final solution?

  28. Zale101
    • one year ago
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    Yes.

  29. Zale101
    • one year ago
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    Good job ^_^

  30. anonymous
    • one year ago
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    yay!! thanks so much!! do you have time for another one?

  31. Zale101
    • one year ago
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    Sure.

  32. anonymous
    • one year ago
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    okay!! im not sure if i am understanding this correctly? |dw:1442205581289:dw|

  33. anonymous
    • one year ago
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    was that correct?

  34. anonymous
    • one year ago
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    @Zale101 ?

  35. Zale101
    • one year ago
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    Looks good to me.

  36. Zale101
    • one year ago
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    Good job! :)

  37. anonymous
    • one year ago
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    ooh yay!! thank you!!:D

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